Adjustable caster.



J. HALL & J. L. O. CONNOR.

ADJUSTABLE CASTER.

APPLICATION FILED JUNE 21. I915.

Patentd Nov. 30, 1915.

I llll I1 n M law 1 r a l m s ria ions PATENT @FFTCE.

JAMES HALL AND JOHN L. *0. CONNOR. OF VANCOUVJEJl't, WASHINGTON.

ADJUSTABLE CASTER.

Specification of Letters Patent.

Applicationfiled June 21, 1915. Serial No. 35,400.

of Clarke and State of lVashington, have invented a new and useful Adjustable Caster, of which the following is a specific. tion.

This inventionrelates to improvements in adjustable casters.

An object of the present invention is to provide an adjustable caster which will be simple in construction and therefore cheap to manufacture.

A further object is to provide a caster frame which slidably and adjustably engagesthe spindle, and when forced against the lower extremity of the spindle is adapted to rotate the same,-thus causing the spindle to be advanced or retracted, which causes a corresponding raising or lowering of the caster.

With the foregoingand other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings accompanying this specification and forming a part thereof, the preferred embodiment of our invention is illustrated, in which:'

Figure 1 is a view in perspective ofour improved caster. Fig. 2 is a detail view in elevation of the caster frame, spindle, and attachingineinbers. Fig. 3 is a detail view in section of the attaching member used in connection with iron bedsteads.

Referring to the drawings in which similar reference numerals designate corresponding partsthroughout the several views, a frame 4 is formed with the two outstanding curved arms 5 which project to one side of the head or sleeve 6. The arms are adapted to rotatably support the caster wheel 7 therebetween as is customary with articles of that class to which the present invention appertains.

The head 6 is provided with the bore 6 extending therethrough and which .slidably and rotatably receives the spindle 8 therein. The spindle 8 is provided with a collar 9 against which the head 6 of the caster frame contacts during the normal position thereof.

The collar 9 may be secured upon the spindle in any suitable threading it tightly thereon, or the like. placed on the spindle tached thereto. The upper extremity of the spindle is formed with the threaded shank 10, by means of which an attaching member adapted to engage the leg of the furniture is secured to the spindle.

The head or sleeve 6 is provided at diametric points with the slots 15 extending manner, such as by thereon, by welding it The head or sleeve 6 is longitudinally thereof and which slots are adapted to receive the pin 14 of the spindle 8. The pin 1.4 being seated in the slots 15 as illustrated in Fig. 3, provides that the caster frame may be manually rotated to cause a corresponding rotation of the spindle. Inasmuchas the weight of the furniture is applied to the spindle and supported by the frame, the normal position of the sleeve 6 will be in contact with the collar 9 designed to stand such stresses as may be brought to bear thereon.

An attaching member 11 in the shape of an internally threaded flanged sleeve 11 threadedly engages the shank 10 of the spindle and is designed to rigidly engage an article of furniture for which reason the upstanding projections 13 are provided. The furniture is provided with a bore 6X- tending up thereinto in the usual manner, which bore receives the threaded shank 10 and the flanged sleeve 11 therein. The flange 12 permits a relative motion of the attaching member and furniture as will be readily appreciated.

The attaching member as thus constructed is designed for use with wooden furniture and allows the spindle to be adjusted with relation thereto. In order-to provide means such that the caster herein described may be attached to iron legs of bedsteads, the attaching member as illustrated at 16 in Fig. 3 is provided and consists of a coupling with the internally threaded bore 17 therein adapted to threadedly engage the lower extremity of the pipe-like iron leg of a bedstead while the coaxial and threaded bore 18 is designed to receive-the shank 10 of the spindle thereinr The structure as thus outlined will be subject to cheap and economical manufacture and allows .a person to tell at a. glance Patented Nov. 3Q, 1915.

before the collar is at whether or not the caster frame is in nonrotatable engagement with the spindle. The adjustment of the spindle provides for the raising and lowering of the caster wheel with relation to the vides for the usual advantages attendmg such construction.

The invention may also be embodied in another form for use in connection with billiard and pool tables, and when this is done, the member 11 or 16 which engages the leg of the pool table is of proper shape to be attached thereto, and the screw or shank 10 may be locked at any position to which it is set, by means of a lock or binding nut 19 threaded thereon, as suggested in Fig. 3. Each of the legs of the table is preferably provided with one of the adjustable shanks or feet 10, in order that the table may be leveled readily.

Having thus fully described our invention, what we claim is 1. A caster comprising a spindle having a threaded shank, and a wheel member havfurniture and thus pro ing a sleeve rotatable upon said spindle, the spindle having a portion against Which said sleeve bears, and the sleeve and spindle having interengageable portions whereby when the sleeve is moved away from the first mentioned portion'of the spindle, the spindle can be rotated by turning said wheel member:

2. A caster comprising a spindle having a threaded shank, a collar and a pin, and a wheel member having a sleeve rotatable upon the spindle between said pin and collar, the sleeve being adapted to normally bear against said collar, and having notches at its opposite ends for engaging said pin when the sleeve is moved away from the collar.

In testimony that we claim the foregoing. as our own, we have hereto afiixed our signatures in the presence of two witnesses.

JAMES HALL. JOHN L. O. CONNOR. Witnesses:

T. F. HUsToN, W. W. SrAnKs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent Washington, D. C. 

